Keyword	Found In ?	Repeats	Density ?	Prom. ?
seoquake	TH1D	47	4.1%	9.2
seo	TH1	38	3.3%	8.7
page		24	2.1%	5.4
extension	T	19	1.7%	7.1
keywords		16	1.4%	4.8

Site Audit

Full Semrush-powered site audit for backlinko.com/hub/seo/seoquake

Page Analysis Mobile Compliance Technical Compliance

Passed

16

Error

1

Warning

4

Page Analysis

Title Tag 55 chars

SEOquake: Free SEO Chrome Extension for On-Page Analysis

55 characters (optimal: 50-60)

Your title tag is well-optimized at 55 characters. It includes a primary keyword and fits within Google's display limits.

Meta Description 148 chars

SEOquake is a free Chrome extension by Semrush that gives you instant SEO metrics, on-page audits, and keyword density analysis for any webpage.

Present and readable, but likely to truncate beyond Semrush's recommended range.

Semrush guidance is closer to 135 characters. Tighten the copy so the core value proposition lands before truncation.

Missing ALT Attributes 12 missing

12 of 23 images are missing descriptive alt text.

This weakens accessibility and image-context signals at the same time.

Fix the missing alt text on this page, then use Site Audit to catch the same pattern across the rest of the site.
Fix across your site → Site Audit (Free)

Text/HTML Ratio 14.2%

This page has a relatively heavy HTML shell compared with its visible copy.

Informational signal only. Use it as context, not as a standalone quality grade.

Compare ratio with intent, total copy depth, and template structure before making changes.

Heading Structure Proper

Single H1, proper hierarchy

Informational surface only. Use the heading tree and counts to review structure in context.

Open the Content tab to inspect the full heading tree before changing hierarchy.

URL clean

https://backlinko.com/hub/seo/seoquake

Readable, descriptive, and free of noisy query parameters.

The slug is easy to parse for users and aligns well with the topic of the page.

Keyword Density 4.1%

Top repeated phrase: “seoquake” at 4.1% of visible page copy.

Informational surface only. Density helps compare emphasis, not decide quality on its own.

Use the density data with heading structure and SERP intent before making copy changes.

Internal Links 16 links

Internal link volume is healthy and points users toward adjacent SEO topics.

Informational surface only. Quantity matters less than contextual fit and destination quality.

Open the Links report to inspect anchor text, follow state, and broken targets before making changes.

Mobile Compliance

Viewport Meta Tag Set

Properly configured

Viewport is set correctly for mobile rendering.

Responsive Design Detected

Media queries detected

Page uses responsive breakpoints.

Technical Compliance

HTTP Status 200

The page returns a successful 200 response and is reachable without redirect chains.

This page is accessible to crawlers and users from the primary URL.

XML Sitemap found

https://backlinko.com/sitemap.xml

The sitemap is reachable and can help search engines discover the rest of the site faster.

Robots.txt allowed

https://backlinko.com/robots.txt

Robots.txt is present and does not block this page from crawling.

Meta Robots index, follow

No restrictive crawl directives appear in the page-level meta robots tag.

The page is open to indexing and normal link discovery from its HTML metadata.

X-Robots-Tag not set

No X-Robots-Tag header is present, so nothing here blocks indexation.

The page remains governed by its HTML directives unless the server later adds header-level crawl rules.

HTTPS secure

The page is served over HTTPS with a valid certificate chain.

Transport security is in place and the canonical URL already resolves to HTTPS.

Mixed Content none

No insecure subresources are loading over HTTP on this page.

All critical page assets appear to be delivered over HTTPS.

HSTS missing

Strict-Transport-Security is not advertised on the initial response.

Add HSTS at the server or edge layer to harden HTTPS and reduce downgrade risk.

Page Size 2.3 MB

The main page payload exceeds the healthy size range.

Reduce large media, third-party scripts, and duplicate CSS to lower transfer cost.

Canonical variant

https://backlinko.com/hub/seo/seoquake/

A canonical exists, but the trailing-slash variant differs from the analyzed page URL. Keep canonical and internal linking format consistent.

Language Declaration en

The HTML document exposes a valid lang declaration.

Language metadata is available for crawlers, browsers, and assistive technologies.

Favicon found

A favicon is available and resolves successfully.

This is a small signal, but it improves polish in browsers, tabs, and shared previews.

Schema.org Markup 3 types

Article, BreadcrumbList, and Organization structured data are all present.

The page already exposes enough schema to support stronger entity understanding and richer search features.

Hreflang 0 tags

No hreflang cluster is present on this page.

That can be fine for a single-language site, but review it if you expect regional or language variants.

Google Analytics GA4

Analytics instrumentation is present and the property type resolves to GA4.

Tracking is installed and can support downstream page-level analysis.

Noindex Tag indexable

No noindex directive is present in HTML or HTTP metadata.

This page is eligible for indexing based on the directives visible here.

Encoding UTF-8

Doctype HTML5

HTML Size 186 KB

HTTP Headers cache-control, content-type, server, x-frame-options

Hreflang Tags 0 tags

Image Analysis

Total Images 47

With alt text 35 74%

Missing alt 12 12 images

Oversized (>500KB) 3 Optimize

Format Distribution

WebP22 (47%)

JPEG14 (30%)

PNG8 (17%)

SVG2 (4%)

GIF1 (2%)

Missing Alt Text 12 images

Filename	Dimensions	Status
hero-banner.jpg	2400×1200	Missing alt
screenshot-audit.png	800×600	Missing alt
icon-seo.svg	24×24	Missing alt
team-photo.png	1800×900	Missing alt
infographic.png	3000×2000	Missing alt

Oversized Images 3 images

Image	Dimensions	Size	Status
hero-banner.jpg	2400×1200	1.2 MB	Too large
team-photo.png	1800×900	890 KB	Consider optimizing
infographic.png	3000×2000	2.1 MB	Too large

Structured Data & Social Tags

Article BreadcrumbList Organization

Schema Summary

Format JSON-LD

Types Found 3 (Article, BreadcrumbList, Organization)

AuthorBrian Dean

Published2024-01-15

Modified2024-03-22

Each detected schema type should render as its own reusable detail block. The exact types change page by page.

Detected Schema Type

Article

JSON-LD · 9 top-level properties · Primary entity

{
  "@context": "https://schema.org",
  "@type": "Article",
  "headline": "SEOquake: Free SEO Chrome Extension for Instant Metrics",
  "author": {
    "@type": "Person",
    "name": "Brian Dean"
  },
  "datePublished": "2024-01-15",
  "dateModified": "2024-03-22",
  "publisher": {
    "@type": "Organization",
    "name": "Backlinko"
  },
  "image": "https://backlinko.com/wp-content/uploads/seoquake-hero.jpg",
  "mainEntityOfPage": "https://backlinko.com/hub/seo/seoquake"
}

Detected Schema Type

BreadcrumbList

JSON-LD · 3 list items · Navigational context

{
  "@context": "https://schema.org",
  "@type": "BreadcrumbList",
  "itemListElement": [
    {
      "@type": "ListItem",
      "position": 1,
      "name": "Home",
      "item": "https://backlinko.com"
    },
    {
      "@type": "ListItem",
      "position": 2,
      "name": "SEO Hub",
      "item": "https://backlinko.com/hub/seo"
    },
    {
      "@type": "ListItem",
      "position": 3,
      "name": "SEOquake",
      "item": "https://backlinko.com/hub/seo/seoquake"
    }
  ]
}

Detected Schema Type

Organization

JSON-LD · Brand entity · Publisher context

{
  "@context": "https://schema.org",
  "@type": "Organization",
  "name": "Backlinko",
  "url": "https://backlinko.com",
  "logo": "https://backlinko.com/favicon-32x32.png",
  "sameAs": [
    "https://www.linkedin.com/company/backlinko",
    "https://twitter.com/backlinko"
  ]
}

Test in Rich Results →

Open Graph Tags

og:titleSEOquake: Free SEO Chrome Extension...

og:descriptionSEOquake is a free Chrome extension...

og:typearticle

og:image(present) Set

og:urlhttps://backlinko.com/hub/seo/seoquake

Twitter Card

twitter:cardsummary_large_image

twitter:site@backlinko

twitter:titleSEOquake: The Complete Guide

twitter:image(present) Set

Social Share Preview

Run Semrush Site Audit - Free for 100 Pages

Keyword Density Report

Phrase analysis and content emphasis data for backlinko.com/hub/seo/seoquake

Total words

6,327

1-word phrases

47

2-word phrases

31

3-word phrases

18

4-word phrases

11

Page Info

Title

SEOquake - Backlinko

Meta description

SEOquake is a free browser extension that gives you instant access to key SEO metrics—right from your search results. It works with Chrome and Firefox, helping you analyze search listings without the hassle of manual research.

Keywords Cloud

All keywords 107 phrases across 4 groups

1-word phrases

Keyword	Found In	Repeats	Density	Prom.
seoquake	TH1D	47	4.1%	98
seo	TH1	38	3.3%	95
page		24	2.1%	61
extension	T	19	1.7%	72
keywords		16	1.4%	45
analysis	T	14	1.2%	68
audit		12	1.0%	38
free	TD	11	0.9%	55
semrush	D	10	0.9%	42
links		9	0.8%	30
backlinks		8	0.7%	25
content		7	0.6%	20

2-word phrases

Keyword	Found In	Repeats	Density	Prom.
seo audit	H1	12	1.0%	88
chrome extension	T	9	0.8%	82
keyword density		8	0.7%	35
on page	T	7	0.6%	70
link analysis	D	6	0.5%	52
search engine		5	0.4%	28
seo tools		5	0.4%	25

3-word phrases

Keyword	Found In	Repeats	Density	Prom.
seo chrome extension	T	6	0.5%	75
on page seo	T	5	0.4%	65
keyword density analysis		4	0.3%	30
free seo tool		3	0.3%	48

4-word phrases

Keyword	Found In	Repeats	Density	Prom.
free seo chrome extension	T	3	0.2%	81
instant seo metrics extension	T	2	0.1%	73
keyword density analysis tool		2	0.1%	44
semrush seo browser extension		1	0.1%	52

2-Word Phrases 31 unique

Keyword	Found In	Repeats	Density	Prom.
seo audit	H1	12	1.0%	88
chrome extension	T	9	0.8%	82
keyword density		8	0.7%	35
on page	T	7	0.6%	70
link analysis	D	6	0.5%	52
search engine		5	0.4%	28
seo tools		5	0.4%	25

3-Word Phrases 18 unique

Keyword	Found In	Repeats	Density	Prom.
seo chrome extension	T	6	0.5%	75
on page seo	T	5	0.4%	65
keyword density analysis		4	0.3%	30
free seo tool		3	0.3%	48

4-Word Phrases 11 unique

Keyword	Found In	Repeats	Density	Prom.
free seo chrome extension	T	3	0.2%	81
instant seo metrics extension	T	2	0.1%	73
keyword density analysis tool		2	0.1%	44
semrush seo browser extension		1	0.1%	52

Original Text

Based on visible page copy only. Keywords in the table can link out to Semrush for deeper keyword analysis, while the original text view helps validate whether repeated phrases are naturally distributed through the page.

Links Report

All links found on backlinko.com/hub/seo/seoquake

Total

16

Unique

16

Dofollow

14

Nofollow

2

Broken

1

Internal Links 16 links

URL	Anchor Text	Follow	Status	Backlinks
https://backlinko.com/	Backlinko	DF	200	4.54M
https://backlinko.com/hub	SEO Hub	DF	200	165K
https://backlinko.com/hub/seo	SEO	DF	200	72.8K
https://backlinko.com/hub/seo/seo-tools	SEO Tools	DF	200	18.4K
https://backlinko.com/hub/seo/on-page-seo	On-Page SEO	DF	200	42.6K
https://backlinko.com/hub/seo/technical-seo	Technical SEO	DF	200	31.1K
https://backlinko.com/hub/seo/keyword-research	Keyword Research	DF	200	28.7K
https://backlinko.com/hub/seo/link-building	Link Building	DF	200	24.2K
https://backlinko.com/seo-audit	SEO Audit Checklist	DF	200	17.9K
https://backlinko.com/keyword-research	Keyword Research Guide	DF	200	28.7K
https://backlinko.com/seo-tools	Best SEO Tools	DF	200	18.4K
https://backlinko.com/blog	Blog	DF	200	92.3K
https://backlinko.com/about	About	DF	301	6.2K
https://backlinko.com/contact	Contact	DF	200	3.8K
https://backlinko.com/newsletter	Newsletter	DF	200	4.1K
https://backlinko.com/old-guide	Old Guide	DF	404	214

URL	Anchor Text	Follow	Status	Rank	Backlinks	Subdomain BL	Whois
https://www.semrush.com/analytics/keywordoverview/?q=&db=us	Semrush	DF	200	562	0	15.04M	whois
https://chrome.google.com/webstore/detail/seoquake	Chrome Web Store	NF	200	7	104	91.31M	whois
https://www.semrush.com/siteaudit/	Semrush Site Audit	DF	200	562	7,757	15.04M	whois
https://www.semrush.com/analytics/backlinks/	Backlink Analytics	DF	200	562	24	15.04M	whois
https://www.semrush.com/signup/	Create a Semrush account	DF	301	562	1,353	15.04M	whois
https://twitter.com/backlinko	Twitter	NF	301	40	0	1.78B	whois
https://www.facebook.com/backlinko	Facebook	NF	200	3	0	3.30B	whois
https://www.linkedin.com/company/backlinko	LinkedIn	NF	200	32	0	933M	whois
https://www.youtube.com/channel/backlinko	YouTube	NF	200	2	0	4.88B	whois
https://marketingplatform.google.com/about/analytics/	Google Analytics	DF	200	1	14.1K	5.89M	whois
https://www.screamingfrog.co.uk/seo-spider/	Screaming Frog	NF	200	164	23.9K	9.24M	whois
https://pagespeed.web.dev/	PageSpeed Insights	DF	200	11	34.2K	118.9M	whois
https://developers.google.com/search	Google Search Central	DF	200	1	52.8K	118.9M	whois
https://web.dev/blog/	web.dev	DF	200	11	28.4K	118.9M	whois
https://www.semrush.com/position-tracking/	Rank Tracker	DF	200	562	893	15.04M	whois
https://www.semrush.com/on-page-seo-checker/	On Page SEO Checker	DF	200	562	611	15.04M	whois
https://www.semrush.com/content-marketing/	SEO Content Template	DF	200	562	442	15.04M	whois
https://validator.schema.org/	Schema Validator	DF	200	18	12.6K	3.9M	whois
https://detailed.com/extension/	Detailed SEO Extension	NF	200	89	8.4K	1.7M	whois
https://www.semrush.com/ai-seo/	Semrush AI Visibility	DF	200	562	351	15.04M	whois
https://moz.com/tools	Moz	NF	200	4	87.0K	412.9M	whois
https://ahrefs.com	Ahrefs	NF	200	6	95.1K	388.2M	whois
https://www.statista.com/statistics/website-traffic	Statista	DF	200	15	42.2K	298.4M	whois
https://www.semrush.com/company/legal/terms-of-service/	Terms of Service	DF	200	562	84	15.04M	whois
https://www.semrush.com/company/legal/privacy-policy/	Privacy Policy	DF	200	562	79	15.04M	whois
https://www.semrush.com/backlink_audit/	Backlink Audit	DF	200	562	96	15.04M	whois
https://old-seo-blog.com/tips	SEO Tips	DF	404	1,204	12	1,844	whois

URL / Domain Comparison

Compare any two URLs or domains side by side

Target A

Target B

Metric	backlinko.com	ahrefs.com
Semrush Rank	13,988	21,341
SE Traffic	164,539	1,245,210
Traffic Cost	$570,283	$1,920,440
Backlinks	3,346,409	62,104,981
Subdomain Backlinks	4,522,921	89,404,332
Domain Backlinks	4,542,400	90,118,507

Page Info

Page context, free Semrush snapshot data, and on-page summary details for backlinko.com/hub/seo/seoquake

Overview

Semrush Rank

14.0K

SE Traffic

165K

Traffic Cost

570K

Backlinks

3.35M

Subdomain Backlinks

4.52M

Root Domain Backlinks

4.54M

Basic Page Info

Title Tag

55 chars

SEOquake: Free SEO Chrome Extension for Instant Metrics

Meta Description

148 chars

SEOquake is a free Chrome extension by Semrush that gives you instant SEO metrics, on-page audits, and keyword density analysis for any web page.

Page Summary

Links

87

Internal Links

46

External Links

41

Images

23

H1

1

H2

8

H3

12

Words

2,487

Technical Snapshot

URL

Clean

backlinko.com/hub/seo/seoquake

Robots.txt

Index, Follow

index, follow

Schema

3 types

Article, BreadcrumbList, Organization

Canonical

Self-ref

Self-referencing canonical

Keyword Density Preview

Total number of words: 6327. See all

1-Word Phrases

47

Top keyword: seoquake

2-Word Phrases

31

Top phrase: seo audit

3-Word Phrases

18

Top phrase: seo chrome extension

4-Word Phrases

11

Top phrase: free seo chrome extension

1-Word Phrases

Top 10See all

Keyword	Found in	Repeats	Density
seoquake	TH1D	47	4.1%
seo	TH1	38	3.3%
page		24	2.1%
extension	T	19	1.7%
keywords		16	1.4%
analysis	T	14	1.2%
audit		12	1.0%
free	TD	11	0.9%
semrush	D	10	0.9%
links		9	0.8%

2-Word Phrases

Top 10See all

Keyword	Found in	Repeats	Density
seo audit	H1	12	1.0%
chrome extension	T	9	0.8%
keyword density		8	0.7%
on page	T	7	0.6%
link analysis	D	6	0.5%
search engine		5	0.4%
seo tools		5	0.4%
free seo		4	0.3%
instant metrics		4	0.3%
browser extension		4	0.3%

3-Word Phrases

Top 10See all

Keyword	Found in	Repeats	Density
seo chrome extension	T	6	0.5%
on page seo	T	5	0.4%
keyword density analysis		4	0.3%
free seo tool		3	0.3%
instant seo metrics	T	3	0.2%
density analysis tool		2	0.2%
semrush seo browser		2	0.2%
backlinks to any		2	0.2%
check on page		2	0.1%
browser seo extension		1	0.1%

4-Word Phrases

Top 10See all

Keyword	Found in	Repeats	Density
free seo chrome extension	T	3	0.2%
instant seo metrics extension	T	2	0.1%
keyword density analysis tool		2	0.1%
semrush seo browser extension		1	0.1%
backlinks to any website		1	0.1%
analyze your website free		1	0.1%
check seo on page		1	0.1%
top 100 backlinks to		1	0.1%
seo audit chrome extension		1	0.1%
website keyword density tool		1	0.1%

Free Semrush overview plus connected backlink and traffic analytics for backlinko.com/hub/seo/seoquake

Backlinks Traffic Analytics

Overview

Semrush Rank

14.0K

SE Traffic

165K

Traffic Cost

570K

Backlinks

3.35M

Subdomain Backlinks

4.52M

Root Domain Backlinks

4.54M

Connected Analysis

Total Backlinks

8,491

Referring Domains

1,247

Referring IPs

987

Monthly Visits

892K

Backlinks Overview

Report scope:

Total Backlinks

8,491

Referring Domains

1,247

Referring IPs

987

TLD Distribution

Domains

.com

.org

.net

.co.uk

.io

.de

Other

37

Country Breakdown

Domains

United States38%2,083

United Kingdom12%658

India9%492

Germany7%384

Other34%1,868

Total Backlinks

4.55M

Referring Domains

71.3K

Referring IPs

54.0K

TLD Distribution

Domains

.com

.net

.uk

.gov

.edu

Country Breakdown

Domains

United States43%30,390

United Kingdom5%3,614

Germany3%2,155

France2%1,667

India2%1,508

Total Backlinks

4.55M

Referring Domains

72.8K

Referring IPs

55.0K

TLD Distribution

Domains

.com

.net

.uk

.gov

.edu

Country Breakdown

Domains

United States43%31,343

United Kingdom5%3,693

Germany3%2,223

France2%1,730

India2%1,554

View complete backlink report in Semrush →

Traffic Analytics

Monthly Visits 892K

Unique Visitors654K

Bounce Rate 42.3%

Pages per Visit3.4

Avg. Visit Duration4m 12s

Traffic Sources

Direct

35%

Search

42%

Referral

14%

Social

6%

Paid

3%

View complete traffic report in Semrush →

Heading Structure Copy Headings

Keyword Density Top 5

Images 47 found

Social Share Preview ?

Semrush Overview

Backlinks Overview

Traffic sources

Connect Semrush to unlock traffic analytics

Site Audit

Page Analysis ?

Mobile Compliance ?

Technical Compliance ?

Image Analysis

Format Distribution ?

Missing Alt Text 12 images

Oversized Images 3 images

Structured Data & Social Tags

Social Share Preview ?

Keyword Density Report ?

All keywords 107 phrases across 4 groups Copy Keywords Filter

1-word phrases

2-word phrases

3-word phrases

4-word phrases

2-Word Phrases 31 unique Copy Keywords Filter

3-Word Phrases 18 unique Copy Keywords Filter

4-Word Phrases 11 unique Copy Keywords Filter

Links Report

Internal Links 16 links

External Links 27 links

URL / Domain Comparison

Page Info

Overview

Basic Page Info

Page Summary

Technical Snapshot

Keyword Density Preview

Overview

Connected Analysis

Backlinks Overview ?

TLD Distribution ?

Country Breakdown ?

TLD Distribution ?

Country Breakdown ?

TLD Distribution ?

Country Breakdown ?

Traffic Analytics

Traffic Sources ?

Heading Structure

Page Analysis

Mobile Compliance

Technical Compliance

Format Distribution

Social Share Preview

Keyword Density Report

All keywords 107 phrases across 4 groups

2-Word Phrases 31 unique

3-Word Phrases 18 unique

4-Word Phrases 11 unique

Backlinks Overview

TLD Distribution

Country Breakdown

TLD Distribution

Country Breakdown

TLD Distribution

Country Breakdown

Traffic Sources